Finding the Fourth Proportional to 51,111.69, 70,537.68 and 30,969.42

Step by Step Solution

1. Step 1: Write the proportion equation
   51,111.69 : 70,537.68 = 30,969.42 : x
2. Step 2: Convert to fraction form
   51,111.69/70,537.68 = 30,969.42/x
3. Step 3: Cross multiply
   51,111.69x = 70,537.68 × 30,969.42
4. Step 4: Simplify right side
   51,111.69x = 2,184,511,037.75
5. Step 5: Solve for x
   x = 2,184,511,037.75/51,111.69
6. Step 6: Final answer
   x = 42,739.95